What does a business sign cost?
Sign pricing tracks four things: the type of sign, its size, whether it lights up, and what it takes to get it legally installed. The last one surprises people most.
Type sets the floor
A printed banner and a carved monument sign are not the same category of purchase. Broadly, from least to most: banners and yard signs, cut vinyl on glass, printed panels, dimensional letters, post and panel, carved and sandblasted, then illuminated channel letters and monuments.
Pick the category from how long the sign has to last and how much of your credibility it is carrying, then size within it. A cheap sign on a professional building costs you more than it saves.
Size, and the legibility maths behind it
Roughly one inch of letter height buys ten feet of readable distance. If drivers need to read your sign from 200 feet, you are looking at 20-inch letters, and that number drives the panel size, the structure and the price.
Zoning caps this from the other direction. Your maximum allowed sign area depends on your district and your road frontage, so the practical size is the smaller of what you need and what you may have.
The costs that are not the sign
Permit fees and drawings. Site prep and footings for monument and post signs. An electrician if it lights. Crane or lift time on a tall building. Landlord approval on a leased unit, which costs nothing but can cost weeks.
A quote that covers only fabrication is not a quote for a finished, installed, legal sign. Ask what is excluded.
Where it is worth spending more
Substrate and finish, because a sign that chalks out in three Florida summers gets replaced. Install and structure, because a sign that moves in wind fails at the fasteners. Design, because letter spacing and contrast are the whole job and cost nothing extra to get right at the drawing stage.
Where it is usually not worth spending more: complexity. Additional lines of copy, extra colours and decorative elements add cost and subtract legibility.